Irrigating system.



. PATENTED DEC. 12, 1905. S. P. MENDENHALL.

IRRIGATING SYSTEM.

APPLIGATION FIL ED MAILZZ, 1905.

UNITED STATES PATENT oEEIoE.

ONE-HALF TO J. M. TAYLOR,

OF 'WHITTIER, CALIFORNIA.

IRRIGATING SYSTEM.

Specification of Letters Patent.

Patented Dec. 12, .1905.

Application filed March 22, 1905- Serial N0. 251,501-

To all whom, it may concern:

Be it known that LSAMUEL P. MENDENHALL, a citizen of the United States,residing at Whittier, in the county of Los Angeles and State ofCalifornia, have invented new and useful Improvements in IrrigatingSystems, of which the following is a specification.

My invention relates to a system for irri-' gating land that has aconsiderable grade; and the object thereof is to provide an irrigatingsystem in which the flow of the water can be regulated evenly at all theoutlets. I accomplish this object by means of the system describedherein and illustrated in the accom panying drawings, in which Figure 1is a side view, partly in elevation and partly in section, of apipe-line with out lets and regulating-gates and air-vents thereon withthe ground in section. Fig. 2'is a section on the line 22 of Fig. 1looking toward the upper end of the pipe-line.

In the drawings, 4 is an underground irrigating-line, which is providedat suitable distances with outlet stand-pipes 5, which are provided withvalves 6 to regulate the quantity of water permittedto flow from theirrigating-line. On the irrigating-line at suitable distances apart aregate chambers 7, through which the irrigating-line passes. In thesegate-chambers are partitions 8,which divide the chamber into two partsor chambers. Into the upper chamber the water is received. An aperture9, of substantially the same capacity as the irrigating-line, isprovided in the partitions in register with the channel of theirrigating-line. This aperture is controlled by gate 10, which isvertically movable in guideways 11, secured to the partitions. The gateis provided with a stem 12, which passes upwardly through the top of thegate-chamber and is provided with a gland 13, which makes the jointwater-tight around the stem. Pins 14 are passed through the stem toregulate the height at which the gate stands when opened for irrigatingpurposes. On the upper side of the gate-chambers are vent-pipes 15,which prevent the air frombeing trapped in the line and also serve asa means for determining the position at which the gate in thegate-chambers shall be set. These ventpipes are of such a height abovethe surface of the ground that when the water just comes to the topthereof it indicates that there is' the requisite pressure in thepipe-line above such vent-pipe to supply the stand-pipes with the amountof water which is required to flow therefrom for the proper irrigationof the soil. These vent-pipes will also indicate when there is too greatpressure on the irrigatingline by the height to which the water isthrown from them, and the flow can then be regulated at the head gate.(Not shown.)

Itwill be understood that on the irrigatingline the gate-chambers areplaced closer together or farther. apart as the grade of the land variesand that these chambers are water-tight. It is also understood that thevalves used to regulate the flow of water from the irrigating-line tostand-pipes are of such character that they can be closed to prevent anyflow of water from the irrigating-line.

Having described my invention, whatI claim as new, and desire to secureby Letters Patent, 1s-

1. In an underground irrigating system, an irrigating-line; a pluralityof gate-chambers on said irrigating-line having a closed top, each ofsaid gate-chambers having a partition therein with an aperturetherethrough; a gate in each of said chambers having a stem projectingthrough the top of said chamberand above the surface of the ground; aplurality of stand-pipes intermediate said gate-chambers connected withsaid irrigating-line; and means in said stand-pipes to out off the wholeor a part of the flow through said stand-pipes.

2. In an underground irrigating system, an irrigating-line; a pluralityofgate-chambers on said irrigating-line having a closed top, each ofsaid gate-chambers having a partition therein with an aperturetherethrough; a gate in each of said chambershaving a stem projectingthrough the top of said chamber and above the surface of the ground; avent-pipe adjacent to said gate-chamber connected with saidirrigating-line and on that side of the gate-chamber toward thewater-supply; a plurality of stand-pipes intermediate said gatechambersconnected with said irrigating-line, and means in said stand-pipes toout off the whole or a part of the flow through said stand- In witnessthat I claim the foregoing I havehereunto subscribed my name this 15thday of March, 1905.

SAMUEL P. MENDENHALL.

\Vitnesses:

NINA H. TABER, J. E. NICHOLSON.

